The same holds true of the Paris Agreement which just got signed. True, the pledges that countries brought to the table fall well short of what's needed to limit the world to a 1.5 or even 2 degree Celsius temperature rise, but they make it clear to governments, investors, businesses and civil society that we are headed for eventual and almost complete decarbonization. Once that goal is set, dragging your feet no longer makes much sense, because you are in danger of being left behind.